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Did you know?
There are 60,000 miles of blood vessels in every adult human.
Did you know?
Hippocrates noted that blood separates into four differently colored liquids when removed from the body and examined: a pure red liquid mixed with white liquid material with a yellow-colored froth at the top and a black substance that settles underneath; he named these the four humors (for blood, phlegm, yellow bile, and black bile).
Did you know?
People with high total cholesterol have about two times the risk for heart disease as people with ideal levels.
Did you know?
There are more nerve cells in one human brain than there are stars in the Milky Way.
Did you know?
It is difficult to obtain enough calcium without consuming milk or other dairy foods.